724432 has 20 divisors (see below), whose sum is σ = 1478080. Its totient is φ = 343008.

The previous prime is 724403. The next prime is 724433. The reversal of 724432 is 234427.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724433) by changing a digit.

724432 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 888 + ... + 1495.

It is an arithmetic number, because the mean of its divisors is an integer number (73904).

2⁷²⁴⁴³² is an apocalyptic number.

It is an amenable number.

724432 is an abundant number, since it is smaller than the sum of its proper divisors (753648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

724432 is a wasteful number, since it uses less digits than its factorization.

724432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2410 (or 2404 counting only the distinct ones).

The product of its digits is 1344, while the sum is 22.

The square root of 724432 is about 851.1357118580. The cubic root of 724432 is about 89.8116224460.

Adding to 724432 its reverse (234427), we get a palindrome (958859).

It can be divided in two parts, 724 and 432, that added together give a square (1156 = 34²).

The spelling of 724432 in words is "seven hundred twenty-four thousand, four hundred thirty-two".